Mmiri oxygy Dewar Dewar na-ahụ ka nkwụsi ike nke oxygen site na arụmọrụ arụmọrụ nke ọma, njikwa nrụgide, ihe eji arụ ọrụ nchekwa na ụkpụrụ na-emepụta ihe.
Site na usoro ọrụ mmepụta ihe na nyocha sayensị, ebe ndị a na-eji Sarar na-eji ya bụ ihe ngwọta siri ike ma na-eme mgbanwe maka ọtụtụ US.
Iji karama dowar
